| 摘要 |
PURPOSE:To obtain the titled toner having less tendency for generating an image flow, even in case of high humidity by incorporating a compd. contg. a phenazine ring to the titled toner as external additives when an electric charge controller is a positive controlling agent, and by incorporating a compd. contg. a phenazine ring as an internal or an external additives to the titled toner when the electric charge controller is a negative controlling agent. CONSTITUTION:In the titled toner, various kinds of well-known compds. are used for the electric charge controller. The used amount of said compds. is usually 0.1-10wt% on the weight basis of the titled toner. The composition having the phenazine ring is exemplified by a nigrosine dyestuff, an induline dyestuff and its modifier. Said additives are mixed externally 0.01-20wt% on the weight basis of the titled toner, in the case of the positive electric charge magnetic toner contg. the positive electric charge controller. Said additives are mixed internally in an amount of 0.05-30wt% on the weight basis of the resin or externally in an amount of 0.01-20wt% on the weight basis of the titled toner in the case of the negative electric charge magnetic toner contg. the negative electric charge controller. |
